HELP! "erased all data on entire disk" with gparted from liveCD

Hi,

I am in a trouble, but it should be solvable. Shouldn't it? Please...

long story short:
I deleted my hd from an ubuntu 10.10 liveCD system by trying to create a new partition table with gparted. I just wanted to restore the partition table and clicked on "create partition table" ... apply.

Now the hole hd is an unallocated file system, so without any partitions. There had been 3 ext4 partitions.

Because I did it from an liveCD, all data should be save? Is there a way to search for partitions on the hard disk and get a new old partition table and write it to the mbr?

I searched a lot already (with a very slow mobile internet connection)...